NGL Energy Partners LP, through its subsidiaries, engages in propane and other natural gas liquids businesses in the United States. The company operates in four segments: Crude Oil Logistics, Water Services, Natural Gas Liquids Logistics, and Retail Propane. The Crude Oil Logistics segment purchases crude oil from producers and transports it for resale at pipeline injection points, storage terminals, barge loading facilities, rail facilities, refineries, and other trade hubs. The Water Services segment engages in the transportation, treatment, and disposal of wastewater generated from oil and natural gas production operations; and sale of recycled water and recovered hydrocarbons. The Natural Gas Liquids Logistics segment supplies propane, butane, and other natural gas liquids to retailers, wholesalers, and refiners in the United States and Canada. It provides natural gas liquids terminalling services through its 17 terminals in the United States; and rail car transportation services through its fleet of owned and leased rail cars. The Retail Propane segment sells propane and distillates to end users consisting of residential, agricultural, commercial, re-seller, and industrial customers. NGL Energy Holdings LLC serves as the general partner of the company. NGL Energy Partners LP was founded in 1940 and is headquartered in Tulsa, Oklahoma.